[INFO] fetching crate limit_read 0.2.0... [INFO] checking limit_read-0.2.0 against master#0d37dca25a51fb900a402c94c8818ad1c2789e30 for pr-77526 [INFO] extracting crate limit_read 0.2.0 into /workspace/builds/worker-3/source [INFO] validating manifest of crates.io crate limit_read 0.2.0 on toolchain 0d37dca25a51fb900a402c94c8818ad1c2789e30 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking crates.io crate limit_read 0.2.0 [INFO] finished tweaking crates.io crate limit_read 0.2.0 [INFO] tweaked toml for crates.io crate limit_read 0.2.0 written to /workspace/builds/worker-3/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] e66b832e3922f780b6260c948cd931b83ba6dc6668ff34bb618aaeb25834be7e [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "e66b832e3922f780b6260c948cd931b83ba6dc6668ff34bb618aaeb25834be7e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "e66b832e3922f780b6260c948cd931b83ba6dc6668ff34bb618aaeb25834be7e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e66b832e3922f780b6260c948cd931b83ba6dc6668ff34bb618aaeb25834be7e", kill_on_drop: false }` [INFO] [stdout] e66b832e3922f780b6260c948cd931b83ba6dc6668ff34bb618aaeb25834be7e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 1e5e0cdcf29d04c1e26e0d2967dd54187bfb3cd3812c0d89dca1e0c3802b4ea2 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "1e5e0cdcf29d04c1e26e0d2967dd54187bfb3cd3812c0d89dca1e0c3802b4ea2", kill_on_drop: false }` [INFO] [stderr] Compiling memchr v2.3.3 [INFO] [stderr] Checking limit_read v0.2.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused return value of `std::result::Result::::is_err` that must be used [INFO] [stdout] --> src/lib.rs:194:5 [INFO] [stdout] | [INFO] [stdout] 194 | / buf_reader [INFO] [stdout] 195 | | .read_until_lim(';' as u8, &mut buf, &short_lim) [INFO] [stdout] 196 | | .is_err(); [INFO] [stdout] | |________________^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: if you intended to assert that this is err, consider `.unwrap_err()` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::result::Result::::is_err` that must be used [INFO] [stdout] --> src/lib.rs:215:5 [INFO] [stdout] | [INFO] [stdout] 215 | buf_reader.read_line_lim(&mut buf, &short_lim).is_err(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you intended to assert that this is err, consider `.unwrap_err()` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2.04s [INFO] running `Command { std: "docker" "inspect" "1e5e0cdcf29d04c1e26e0d2967dd54187bfb3cd3812c0d89dca1e0c3802b4ea2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1e5e0cdcf29d04c1e26e0d2967dd54187bfb3cd3812c0d89dca1e0c3802b4ea2", kill_on_drop: false }` [INFO] [stdout] 1e5e0cdcf29d04c1e26e0d2967dd54187bfb3cd3812c0d89dca1e0c3802b4ea2